Fig. 3

(a) The receiver operating characteristic (ROC) curve of circRNA for diabetes mellitus detection, (b) The Deek’s funnel-plot asymmetry test of circRNA for diabetes mellitus detection. The horizontal axis represents the diagnostic odds ratio (DOR) as an indicator of the diagnostic accuracy, and the vertical axis represents the inverse of the square root of the effective sample size (1/root (ESS)). This figure shows symmetrical effect size measures (DOR) over different sample sizes, indicating no presence of publication bias